From owner-freebsd-net Mon Aug 6 6:57:52 2001 Delivered-To: freebsd-net@freebsd.org Received: from verdi.nethelp.no (verdi.nethelp.no [158.36.41.162]) by hub.freebsd.org (Postfix) with SMTP id 23B9537B401 for ; Mon, 6 Aug 2001 06:57:50 -0700 (PDT) (envelope-from sthaug@nethelp.no) Received: (qmail 13958 invoked by uid 1001); 6 Aug 2001 13:57:47 +0000 (GMT) To: henry@techiebod.com Cc: freebsd-net@freebsd.org Subject: Re: BPF does not pick up loopback activity From: sthaug@nethelp.no In-Reply-To: Your message of "Mon, 6 Aug 2001 14:35:38 +0100 (BST)" References: <20010806140314.O37365-100000@localhost> X-Mailer: Mew version 1.05+ on Emacs 19.34.2 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Date: Mon, 06 Aug 2001 15:57:47 +0200 Message-ID: <13956.997106267@verdi.nethelp.no> Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org > Note that the packets sent to the local IP address are not picked up by > tcpdump. This can be tried with any traffic type, I have just used ping > as an example. > > Is this the correct/desired behaviour? If it is, is there any other way > to capture these packets? This is the expected behavior, because these packets never touch the Ethernet. Try capturing the traffic via lo0. Steinar Haug, Nethelp consulting, sthaug@nethelp.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message